A recent paper in eLife, samples bacterial from the foreheads, palms/paws, stools tongues and the right palm of human household partners. It showed that the phylotypes of bacteria between human and dog we more similar than between other humans and others dogs. We are truly symbiotic with our dogs and considering that the correlation between toxoplasmosis and schizophrenia leading some to theorize there may be a physiological basis for the crazy cat person stereotype, it’s likely our homes are our own personal microenvironments. The next time your dog wants to lick your face, just give up. You already share all your bacteria with your best friend.